Acutally, we just got through testing Plextools and the latest firmware. All testing is indeed done at 2X CLV! The only difference in the Accuracy setting is how much of the disc do you skip when you are testing. At low accuracy you are testing very little of the disc. Very disapointing because we want to use these as a tester in our duplicator--not gonna work! We will have to use Kprobe or DVDinfopro. Bummer, the Plex is a really good drive-except for this.

Keep in mind that if you are thinking about using K-Probe because it is faster, that you may run into problems where discs scan good, but are not actually readable, or have high enough errors as to impede reading at full speed. Remember that neither K-Probe nor Q-Check are capable (hardware limitations, not software) of checking all the types of errors that can affect quality, compatability, and playability, and are not properly calibrated to check for the errors that they CAN test for! So it is not unheard of to run into situations like the ones in the following two links: